阅读说明：本技术 水泥固化材料、人造泥岩及其制造方法 (Cement-setting material, artificial mudstone and method for producing the same ) 是由 魏东海 沙焕焕 邓亚光 于 2018-02-08 设计创作，主要内容包括：本发明公开了一种水泥固化材料、人造泥岩及其制造方法。本发明公开了一种水泥固化材料,由以下质量百分比的成分组成：水泥60％～90％；砂5％～30％；矿渣微粉1％～10％；碱性激发剂0.1％～2％；膨胀剂0.1％～2％；纤维材料0.05％～0.1％；以上成分的总和为100％。利用本发明提供的水泥固化材料和原位土进行混合能够得到高强度人造泥岩,可有效替代现有地基基础。(The invention discloses a cement curing material, artificial mudstone and a manufacturing method thereof. The invention discloses a cement curing material which comprises the following components in percentage by mass: 60% -90% of cement; 5% -30% of sand; 1% -10% of slag micro powder; 0.1 to 2 percent of alkaline excitant; 0.1 to 2 percent of expanding agent; 0.05 to 0.1 percent of fiber material; the sum of the above components is 100%. The high-strength artificial mudstone can be obtained by mixing the cement curing material and the in-situ soil, and the high-strength artificial mudstone can effectively replace the existing foundation.)

1. The cement curing material is characterized by comprising the following components in percentage by mass:

the sum of the above components is 100%.

2. The artificial mudstone is characterized in that the artificial mudstone is obtained by extruding and expanding a cement-sand-soil complex;

the cement sand soil complex comprises in-situ soil and a cement curing material with the doping amount of 13-25 percent; the cement setting material is the cement setting material according to claim 1;

the water content of the in-situ soil is 25-35%, the porosity ratio is 0.6-1, the compactness is more than or equal to 0.92, and the plasticity index is less than or equal to 17;

the compactness of the cement-sand-soil complex is more than or equal to 0.94, the plasticity index is less than or equal to 10, and the water content is less than or equal to 22%;

the content of aggregate with the grain diameter of more than or equal to 0.075mm in the cement-sand-soil complex is more than or equal to 15%.

3. A method for producing artificial mudstone according to claim 1 or 2, characterized in that: comprises the following steps:

(1) adjusting the in-situ soil to improve the physical and mechanical properties of the soil body, so that the water content of the soil body reaches 25-35%, the porosity reaches 0.6-1, the compactness is more than or equal to 0.92, and the plasticity index is less than or equal to 17;

(2) adding 13-25% of cement-based curing material into the improved soil body, and performing powder spraying, sand blasting and stirring at the air pressure of 0.7-1.2MPa and slurry spraying, water spraying and stirring at the pressure of 5-35MPa by adopting a multi-channel stirrer with the power of a main motor being more than or equal to 90kwd, the large torque being more than or equal to 15 t.m, the diameter of a stirring head being 800-1500mm and the number of channels being more than or equal to 2, so that the content of aggregate with the particle size being more than or equal to 0.075mm in the cement-sand-soil composite body is more than or equal to 15%, and the water-cement ratio is less than or equal to 0.6; the stirring head is obliquely provided with more than or equal to 6 blade-shaped blades and more than or equal to 4 helical blades, the lifting height is less than or equal to 15mm in each rotation, the stirring frequency of each point of the soil body is more than or equal to 20 times, and the chain and the helical stirring blades rotate together to pressurize, so that the compactness of the cement-sand-soil composite is more than or equal to 0.94, the plasticity index is less than or equal to 10, and the water content is less than or equal to 22%;

(3) then strongly extruding and expanding the cement-sand-soil composite again by tamping, compacting, static pressure and hammering methods to form the artificial mudstone with the strength of more than or equal to C10 concrete.

4. The manufacturing method according to claim 3, wherein: the method for adjusting the in-situ soil comprises the following steps: for soft soil with higher water content, one or a combination of a plurality of methods of pumping water through a pipe well, electroosmosis, vacuum preloading, rolling and dynamic compaction power consolidation, a plastic drainage plate, a vibration immersed tube compacted gravel pile, a low-strength cement soil pile and high-pressure air-jet drainage in construction is adopted; and (4) carrying out guniting and water spraying treatment on the foundation with lower water content in construction.

Technical Field

The invention relates to the technical field of building materials, in particular to a cement curing material, artificial mudstone and a manufacturing method thereof.

Background

The construction of the existing foundation is generally carried out in the mode of driving precast piles and pouring concrete by taking out the concrete on site, so that the material consumption is high, the operation cost is high, and the construction period is long.

Disclosure of Invention

The invention aims to provide a cement curing material, and high-strength artificial mudstone can be obtained by mixing the cement curing material and in-situ soil, so that the cement curing material can effectively replace the existing foundation.

The technical solution of the invention is as follows:

the invention provides a cement curing material which comprises the following components in percentage by mass:

60% -90% of cement;

5% -30% of sand;

1% -10% of slag micro powder;

0.1 to 2 percent of alkaline excitant;

0.1 to 2 percent of expanding agent;

0.05 to 0.1 percent of fiber material;

the sum of the above components is 100%.

The invention also provides an artificial mudstone which is obtained by extruding and expanding the cement-sand-soil complex;

the cement sand soil complex comprises in-situ soil and a cement curing material with the doping amount of 13-25%; the cement curing material is the cement curing material in the technical scheme;

the water content of the in-situ soil is 25-35%, the porosity ratio is 0.6-1, the compactness is more than or equal to 0.92, and the plasticity index is less than or equal to 17;

the compactness of the cement-sand-soil complex is more than or equal to 0.94, the plasticity index is less than or equal to 10, and the water content is less than or equal to 22%;

the content of aggregate with the grain diameter of more than or equal to 0.075mm in the cement-sand-soil complex is more than or equal to 15%.

The invention also provides a manufacturing method of the artificial mudstone in the technical scheme, which comprises the following steps:

(1) adjusting the in-situ soil to improve the physical and mechanical properties of the soil body, so that the water content of the soil body reaches 25-35%, the porosity reaches 0.6-1, the compactness is more than or equal to 0.92, and the plasticity index is less than or equal to 17;

(2) adding 13-25% of cement-based curing material into the improved soil body, and performing powder spraying, sand blasting and stirring at the air pressure of 0.7-1.2MPa and slurry spraying, water spraying and stirring at the pressure of 5-35MPa by adopting a multi-channel stirrer with the power of a main motor being more than or equal to 90kwd, the large torque being more than or equal to 15 t.m, the diameter of a stirring head being 800-1500mm and the number of channels being more than or equal to 2, so that the content of aggregate with the particle size being more than or equal to 0.075mm in the cement-sand-soil composite body is more than or equal to 15%, and the water-cement ratio is less than or equal to 0.6; the stirring head is obliquely provided with more than or equal to 6 blade-shaped blades and more than or equal to 4 helical blades, the lifting height is less than or equal to 15mm in each rotation, the stirring frequency of each point of the soil body is more than or equal to 20 times, and the chain and the helical stirring blades rotate together to pressurize, so that the compactness of the cement-sand-soil composite is more than or equal to 0.94, the plasticity index is less than or equal to 10, and the water content is less than or equal to 22%;

(3) then strongly extruding and expanding the cement-sand-soil composite again by tamping, compacting, static pressure and hammering methods to form the artificial mudstone with the strength of more than or equal to C10 concrete.

Preferably, the method for adjusting the in-situ soil comprises the following steps: for soft soil with higher water content, one or a combination of a plurality of methods of pumping water through a pipe well, electroosmosis, vacuum preloading, rolling and dynamic compaction power consolidation, a plastic drainage plate, a vibration immersed tube compacted gravel pile, a low-strength cement soil pile and high-pressure air-jet drainage in construction is adopted; and (4) carrying out guniting and water spraying treatment on the foundation with lower water content in construction.

The cement solidifying material provided by the invention is mixed with the in-situ soil to obtain the high-strength artificial mudstone, and the high-strength artificial mudstone can effectively replace the existing foundation.

The present invention will be further described with reference to the following examples.

Detailed Description

A method for manufacturing artificial mudstone by in-situ soil modification comprises the following steps:

(1) the in-situ soil is adjusted to improve the physical and mechanical properties of the soil body, so that the water content of the soil body reaches 25-35%, the porosity reaches 0.6-1, the compactness is more than or equal to 0.92, and the plasticity index is less than or equal to 17;

(2) adding 13-25% of cement-based curing material into the improved soil body, and performing powder spraying, sand blasting and stirring at the air pressure of 0.7-1.2MPa and slurry spraying, water spraying and stirring at the pressure of 5-35MPa by adopting a multi-channel stirrer with the main motor power of more than or equal to 90kwd, the large torque of more than or equal to 15 t.m, the stirring head diameter of 800-; the stirring head is obliquely provided with more than or equal to 6 blade-shaped blades and more than or equal to 4 helical blades, the lifting height is less than or equal to 15mm in each rotation, the stirring frequency of each point of the soil body is more than or equal to 20 times, and the chain and the helical stirring blades rotate together to pressurize, so that the compactness of the cement-sand-soil composite is more than or equal to 0.94, the plasticity index is less than or equal to 10, and the water content is less than or equal to 22%;

(3) then strongly extruding and expanding the cement-sand-soil composite again to form the artificial mudstone with the strength more than or equal to C10 concrete.

The method for adjusting the in-situ soil comprises the following steps: for soft soil with higher water content, one or a combination of a plurality of methods of pumping water through a pipe well, electroosmosis, vacuum preloading, rolling and dynamic compaction power consolidation, a plastic drainage plate, a vibration immersed tube compacted gravel pile, a low-strength cement soil pile and high-pressure air-jet drainage in construction is adopted; and (4) carrying out guniting and water spraying treatment on the foundation with lower water content in construction.

And (3) after the step (2), strongly extruding and expanding the cement-sand-soil complex again by using a tamping, compacting, static pressure and hammering method.

The cement-based curing material added in the step (2) comprises the following components in percentage by mass:

60 to 90 percent of cement

5 to 30 percent of sand

1 to 10 percent of slag micro powder

0.1 to 2 percent of alkaline excitant

0.1 to 2 percent of expanding agent

0.05 to 0.1 percent of fiber material;

the total amount of the components is 100 percent, and the proportion of the components is adjusted according to the soil quality and the design requirement, so that the content of the aggregate with the grain diameter of more than or equal to 0.075mm in the cement-sand-soil composite is more than or equal to 15 percent.

Although the above embodiments have been described in detail, they are only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and all of the embodiments belong to the protection scope of the present invention.